About potassium cyanide valency
Cyanide is principally created with the mining of silver and gold: It can help dissolve these metals enabling separation from the other solids. In the cyanide approach, finely ground large-grade ore is blended with the cyanide (in a ratio of about one:500 elements NaCN to ore); small-grade ores are stacked into heaps and sprayed with a cyanide solu